CN110202458B - Magnetic needle magnetic grinding device for long plate hole edge tumor accumulation - Google Patents
Magnetic needle magnetic grinding device for long plate hole edge tumor accumulation Download PDFInfo
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- CN110202458B CN110202458B CN201910622336.4A CN201910622336A CN110202458B CN 110202458 B CN110202458 B CN 110202458B CN 201910622336 A CN201910622336 A CN 201910622336A CN 110202458 B CN110202458 B CN 110202458B
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- 238000000227 grinding Methods 0.000 title claims abstract description 41
- 230000036326 tumor accumulation Effects 0.000 title description 6
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 206010028980 Neoplasm Diseases 0.000 claims abstract description 24
- 239000004020 conductor Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 12
- 230000008569 process Effects 0.000 abstract description 7
- 238000003860 storage Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000009825 accumulation Methods 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 5
- 238000005553 drilling Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000006249 magnetic particle Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0023—Other grinding machines or devices grinding machines with a plurality of working posts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/003—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor whereby the workpieces are mounted on a holder and are immersed in the abrasive material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/10—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor involving other means for tumbling of work
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B31/00—Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work and/or the abrasive material is loose; Accessories therefor
- B24B31/12—Accessories; Protective equipment or safety devices; Installations for exhaustion of dust or for sound absorption specially adapted for machines covered by group B24B31/00
- B24B31/14—Abrading-bodies specially designed for tumbling apparatus, e.g. abrading-balls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/10—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
- B24B47/12—Drives or gearings; Equipment therefor for rotating or reciprocating working-spindles carrying grinding wheels or workpieces by mechanical gearing or electric power
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B47/00—Drives or gearings; Equipment therefor
- B24B47/20—Drives or gearings; Equipment therefor relating to feed movement
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention belongs to the technical field of magnetic grinding, and particularly relates to a magnetic needle magnetic grinding device for long plate hole edge accumulation, which is characterized by comprising a box body, a storage groove, a group of clamping grooves and a magnetic grinding mechanism, wherein the magnetic grinding mechanism comprises a linear reciprocating mechanism and a magnetic rotating mechanism, the linear reciprocating mechanism comprises a bracket, a sliding part I and a sliding part II, the sliding part I comprises two sliding rails I, a sliding table I in sliding connection with the two sliding rails I, the sliding part II comprises two sliding rails II and a rack, the sliding table II is in sliding connection with the two sliding rails II, a gear motor, a gear motor and the sliding table I are fixedly connected, and the magnetic rotating mechanism comprises a magnetic pole tray motor, a magnetic pole tray and a plurality of magnetic poles. The invention adopts the magnetic needle magnetic grinding method to process the long plate hole edge accumulated tumor, improves the efficiency of removing the long plate hole edge accumulated tumor by the magnetic needle magnetic grinding, saves the production cost and reduces the labor intensity of workers.
Description
Technical Field
The invention belongs to the technical field of magnetic grinding, and particularly relates to a magnetic needle magnetic grinding device for long plate hole edge tumor accumulation.
Background
With the rapid development of modern industry and scientific technology, more materials with high hardness and high melting point are used, but the traditional method cannot meet certain process requirements, so that new technologies and processes are gradually developed to adapt to the new development. The laser processing technology is one of the new type, and the laser drilling technology irradiates the processed material with high power density laser beam to heat the material to vaporization temperature and evaporate to form holes. The laser drilling has the advantages of high drilling speed, high efficiency and capability of drilling on various hard, brittle and soft materials.
The long plate subjected to laser drilling can leave accumulated tumor at the edge of the hole, and the service performance of the long plate can be seriously affected, so that the long plate is particularly important to remove the accumulated tumor at the edge of the long plate hole, and the produced accumulated tumor is also relatively high in hardness and strength because of relatively high hardness and strength of long plate materials, and is difficult to remove, and the long plate is generally removed by a manual polishing method, so that the long plate has high labor intensity, low efficiency and high cost. Therefore, an automatic processing method is needed to improve the processing efficiency and save the cost.
Disclosure of Invention
The invention aims to provide a magnetic needle magnetic grinding device for removing long plate hole edge accumulated tumors, which can improve the efficiency of removing the long plate hole edge accumulated tumors, save the production cost and reduce the labor intensity of workers.
The aim of the invention is realized by the following technical scheme:
the invention relates to a magnetic needle magnetic grinding device for long plate hole edge tumor, which is characterized by comprising a box body, a containing groove arranged on the upper end surface of the box body, a group of clamping grooves arranged in the containing groove and arranged in parallel, a magnetic grinding mechanism arranged in the box body,
the magnetic grinding mechanism comprises a linear reciprocating mechanism, a magnetic rotating mechanism arranged on the upper part of the linear reciprocating mechanism, the linear reciprocating mechanism comprises a bracket, a sliding I part arranged above the bracket, a sliding II part arranged below the sliding I part, the sliding I part comprises two sliding rails I arranged above the bracket and arranged along the longitudinal direction of the clamping groove, a sliding table I stretching over the two sliding rails I and being in sliding connection with the two sliding rails I, the sliding II part comprises a bottom plate arranged on the bracket, two sliding rails II and a rack arranged on the bottom plate, a sliding table II in sliding connection with the two sliding rails II, a gear motor arranged on the sliding table II, a gear connected with the output end of the gear motor, the gear meshed with the rack, the gear motor is fixedly connected with the sliding table I,
the magnetic force rotating mechanism comprises a magnetic pole tray motor arranged on the sliding table I, a magnetic pole tray connected with the output end of the magnetic pole tray motor, and a plurality of magnetic poles arranged on the magnetic pole tray.
The plurality of magnetic poles comprise eight N poles and eight S poles, the eight N poles are concentrated on one side, the eight S poles are concentrated on the other side, the plurality of magnetic poles are diffused to the periphery by the circle center of the magnetic pole tray and distributed on three layers, the first layer is sequentially distributed into N poles, S poles and S poles from the longitudinal axis to the transverse axis in the anticlockwise direction, the distance from the magnetic pole positioned on the longitudinal axis to the circle center is larger than the distance from the magnetic pole positioned on the transverse axis to the circle center,
the second layer is R 1 The circle centers of the four quadrants are distributed into N poles, S poles and S poles from the first quadrant to the fourth quadrant in the anticlockwise direction, the magnetic poles of the four quadrants are respectively positioned in the directions of 45 degrees, 135 degrees, 225 degrees and 315 degrees,
the third layer is provided with four groups of magnetic poles, the first group is positioned above the transverse axis and symmetrical with the longitudinal axis, the second group is positioned below the transverse axis and symmetrical with the longitudinal axis, the third group is positioned on the left side of the longitudinal axis and symmetrical with the transverse axis, the fourth group is positioned on the right side of the longitudinal axis and symmetrical with the transverse axis, the N poles and the S poles of the third group and the fourth group are respectively positioned above the transverse axis and below the transverse axis.
Two sides of each clamping groove of the group of clamping grooves are provided with clamping slide ways, and two long sides of the long plate are arranged in the two clamping slide ways.
The storage groove is made of non-magnetic conductive materials.
The clamping groove is made of non-magnetic conductive materials.
The invention has the advantages that:
(1) According to the magnetic needle magnetic grinding device for the long plate hole edge accumulated tumor, disclosed by the invention, the long plate hole edge accumulated tumor is processed by adopting a magnetic needle magnetic grinding method, and the efficiency of removing the long plate hole edge accumulated tumor is improved by magnetic needle magnetic grinding, so that the production cost is saved, and the labor intensity of workers is reduced;
(2) According to the magnetic needle magnetic grinding device for long plate hole edge tumor accumulation, magnetic needles are adopted to replace magnetic particles required by common magnetic grinding, the long plate hole edge tumor accumulation can be rapidly removed due to collision, plough scratching and rolling of the magnetic needles, and the quantity of the magnetic needles cannot be lost;
(3) According to the magnetic needle magnetic grinding device for long-plate hole edge tumor accumulation, the magnetic needle can be repeatedly used in the processing process, the consumption of the magnetic needle is not increased too much, the production cost is not increased on a processing medium to a certain extent, and the economic benefit is improved;
(4) The magnetic needle magnetic grinding device for the long plate hole edge tumor is clean in processing and free of any pollution to the environment in the processing process.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural diagram of the magnetic grinding mechanism of the present invention.
Fig. 3 is a schematic view of the magnetic pole distribution structure of the present invention.
FIG. 4 is a schematic diagram showing the positional relationship between a long plate and a slot according to the present invention.
Fig. 5 is a long plate with hole edge tumor according to the present invention.
Detailed Description
Specific embodiments of the present invention are further described below with reference to the accompanying drawings.
As shown in fig. 1-5, the magnetic needle magnetic grinding device for long plate hole edge tumor is characterized by comprising a box body 2, a containing groove 3 arranged on the upper end surface of the box body 2, a group of clamping grooves 1 arranged in the containing groove 3 and arranged in parallel, a magnetic grinding mechanism arranged in the box body 2,
the magnetic grinding mechanism comprises a linear reciprocating mechanism, a magnetic rotating mechanism arranged on the upper part of the linear reciprocating mechanism, the linear reciprocating mechanism comprises a bracket 7, a sliding I part arranged above the bracket 7, a sliding II part arranged below the sliding I part, the sliding I part comprises two sliding rails I5 arranged above the bracket 7 and arranged along the longitudinal direction of the clamping groove 1, a sliding table I9 crossing over the two sliding rails I5 and in sliding connection with the two sliding rails I5, the sliding II part comprises a bottom plate 14 arranged on the bracket 7, two sliding rails II 12 and a rack 13 arranged on the bottom plate 14, a sliding table II 11 in sliding connection with the two sliding rails II 12, a gear motor 10 arranged on the sliding table II 11, a gear 17 connected with the output end of the gear motor 10, the gear 17 meshed with the rack 13, the gear motor 10 fixedly connected with the sliding table I9,
the magnetic force rotating mechanism comprises a magnetic pole tray motor 6 arranged on the sliding table I9, a magnetic pole tray 4 connected with the output end of the magnetic pole tray motor 6, and a plurality of magnetic poles 8 arranged on the magnetic pole tray 4.
The plurality of magnetic poles 8 comprise eight N poles and eight S poles, the eight N poles are concentrated on one side, the eight S poles are concentrated on the other side, the plurality of magnetic poles 8 are diffused to the periphery by the circle center of the magnetic pole tray 4 and distributed on three layers, the first layer is sequentially distributed into N poles, S poles and S poles from the vertical axis to the horizontal axis in the anticlockwise direction, the distance from the magnetic pole 8 positioned on the vertical axis to the circle center is larger than the distance from the magnetic pole 8 positioned on the horizontal axis to the circle center,
the second layer is R 1 The magnetic poles 8 of the four quadrants are respectively positioned at 45 DEG, 135 DEG, 225 DEG and 315 DEGIn the direction of the light-emitting diode,
the third layer is provided with four groups of magnetic poles 8, the first group is positioned above the transverse axis and symmetrical with the longitudinal axis, the second group is positioned below the transverse axis and symmetrical with the longitudinal axis, the third group is positioned on the left side of the longitudinal axis and symmetrical with the transverse axis, the fourth group is positioned on the right side of the longitudinal axis and symmetrical with the transverse axis, the N poles of the third group and the fourth group are respectively positioned above the transverse axis and the S poles are respectively positioned below the transverse axis. The arrangement mode can avoid the fact that the magnetic induction intensity generated when the N poles or the S poles of all the magnetic poles 8 are upward is relatively small, and combines the advantages that the magnetic induction lines generated when the N poles or the S poles of all the magnetic poles 8 are upward are relatively high and the effective area of the magnetic field is relatively large. Meanwhile, the arrangement mode is favorable for forming a gradient magnetic field, and when the magnetic pole tray 4 rotates to generate a rotating magnetic field, the gradient magnetic field is favorable for continuous rolling of the magnetic needle, so that the motion track of the magnetic needle is more complex, the processing efficiency of a workpiece is improved, and the uniformity is enhanced.
Two sides of each clamping groove 1 of the group of clamping grooves 1 are provided with clamping slide ways 16, and two long sides of the long plate 15 are arranged in the two clamping slide ways 16.
The storage groove 3 is made of non-magnetic conductive materials.
The clamping groove 1 is made of non-magnetic conductive materials.
According to the magnetic needle magnetic grinding device for long plate hole edge tumor, a plurality of long plates 15 drilled with holes are respectively placed in a clamping groove 1, two long sides of each long plate 15 are respectively arranged in two clamping slide ways 16 of the clamping groove 1 to be positioned, a magnetic grinding mechanism is arranged below the whole containing groove 3, namely in a box body 2, the magnetic grinding mechanism consists of a linear reciprocating mechanism and a magnetic rotating mechanism arranged at the upper part of the linear reciprocating mechanism, the magnetic rotating mechanism is driven to do linear motion along the longitudinal direction of the long plate 15 through the linear reciprocating mechanism, meanwhile, the magnetic rotating mechanism rotates to drive a magnetic pole tray 4 of the magnetic rotating mechanism to rotate, so that a mixed solution of water-based grinding liquid arranged in the clamping groove 1 and a magnetic needle do overturning compound motion along with the rotating magnetic pole tray 4, and the tumor at the long plate 15 hole edge is removed under the action of magnetic needle collision force.
The storage groove 3 is non-magnetic, and is divided into a plurality of clamping grooves, and the clamping grooves 1 are also non-magnetic. The size of the storage groove 3 and the number of the divided clamping grooves 1 are formulated according to the actual situation according to the number of the processed long plates 15.
The linear reciprocating mechanism is characterized in that the gear motor 10 drives the gear 17 to rotate, the sliding table II 11 is driven to move along the sliding rail II 12 through the meshing of the gear 17 and the rack 13, the sliding table I9 connected with the gear motor 10 moves along the sliding rail I5, and the gear motor 10 can realize forward rotation and reverse rotation under the control of the control system, so that the reciprocating motion of the magnetic pole tray 4 is realized. Under the control of the control system, the magnetic pole tray motor 6 also realizes two motion modes of forward rotation and reverse rotation, and the magnetic pole tray motor 6 drives the magnetic pole tray 4 to forward rotate and reverse rotation. The lengths of the slide rail I5 and the slide rail II 12 of the linear reciprocating mechanism are determined according to the length of the actually processed long plate 15.
Example 1
Magnetic grinding processing of 8 long plate hole edge accumulated nubs:
1. washing 8 long plates 15 with clear water, removing stains, and drying by a hot air blower;
2. 8 clamping grooves 1 on the storage groove 3 are selected, 8 long plates 15 are placed in the clamping grooves 1, the long plates 15 are positioned by clamping slide ways 16 on two sides of the clamping grooves 1, and the storage groove 3 is placed on the box body 2;
3. each clamping groove 1 is respectively filled with a mixed solution of 1000ml of water and 400ml of water-based grinding fluid and 0.5kg of magnetic needle (specification: 2: 1.0 mm. Times.5 mm);
4. the magnetic pole tray motor 6 and the gear motor 10 are started, the gear motor 10 automatically rotates forward and backward according to the setting, the magnetic pole tray 4 rotates and linearly reciprocates along the long plate length direction, the rotating speed of the magnetic pole tray motor 6 is set to 600r/min, the forward and backward rotation time is set to 5min, the gear motor 10 drives the gear 17 to rotate, the magnetic pole tray 4 under the action of the gear 17 and the rack 13 moves linearly, the linear movement speed is set to 130mm/min, and the processing time is set to 40min;
5. after the processing is finished, the clamping groove 1 is taken out of the containing groove 3, and then the long plate 15 is taken out of the clamping groove 1 and dried by a blower.
According to the magnetic needle magnetic grinding device for the long plate hole edge accumulated tumor, disclosed by the invention, the long plate hole edge accumulated tumor is processed by adopting a magnetic needle magnetic grinding method, and the efficiency of removing the long plate hole edge accumulated tumor is improved by magnetic needle magnetic grinding, so that the production cost is saved, and the labor intensity of workers is reduced; the magnetic needle is adopted to replace magnetic particles required by common magnetic grinding, so that long-plate hole edge accumulated tumors can be rapidly removed due to collision of the magnetic needle, scratching of a plough and rolling, and the quantity of the magnetic needle cannot be lost; the magnetic needle can be repeatedly used in the processing process, the consumption of the magnetic needle is not increased too much, the production cost is not increased on a processing medium to a certain extent, and the economic benefit is improved; the magnetic needle magnetic grinding device for the long plate hole edge tumor is clean in processing and free of any pollution to the environment in the processing process.
Claims (3)
1. A magnetic needle magnetic grinding device for long plate hole edge tumor is characterized by comprising a box body, a containing groove arranged on the upper end surface of the box body, a group of clamping grooves arranged in the containing groove and arranged in parallel, a magnetic grinding mechanism arranged in the box body,
the magnetic grinding mechanism comprises a linear reciprocating mechanism, a magnetic rotating mechanism arranged on the upper part of the linear reciprocating mechanism, the linear reciprocating mechanism comprises a bracket, a sliding I part arranged above the bracket, a sliding II part arranged below the sliding I part, the sliding I part comprises two sliding rails I arranged above the bracket and arranged along the longitudinal direction of the clamping groove, a sliding table I stretching over the two sliding rails I and being in sliding connection with the two sliding rails I, the sliding II part comprises a bottom plate arranged on the bracket, two sliding rails II and a rack arranged on the bottom plate, a sliding table II in sliding connection with the two sliding rails II, a gear motor arranged on the sliding table II, a gear connected with the output end of the gear motor, the gear meshed with the rack, the gear motor is fixedly connected with the sliding table I,
the magnetic force rotating mechanism comprises a magnetic pole tray motor arranged on the sliding table I, a magnetic pole tray connected with the output end of the magnetic pole tray motor, a plurality of magnetic poles arranged on the magnetic pole tray,
the plurality of magnetic poles comprise eight N poles and eight S poles, the eight N poles are concentrated on one side, the eight S poles are concentrated on the other side, the plurality of magnetic poles are diffused to the periphery by the circle center of the magnetic pole tray and distributed on three layers, the first layer is sequentially distributed into N poles, S poles and S poles from the longitudinal axis to the transverse axis in the anticlockwise direction, the distance from the magnetic pole positioned on the longitudinal axis to the circle center is larger than the distance from the magnetic pole positioned on the transverse axis to the circle center,
the second layer is R 1 The circle centers of the four quadrants are distributed into N poles, S poles and S poles from the first quadrant to the fourth quadrant in the anticlockwise direction, the magnetic poles of the four quadrants are respectively positioned in the directions of 45 degrees, 135 degrees, 225 degrees and 315 degrees,
the third layer is distributed with four groups of magnetic poles, the first group is positioned above the transverse axis and symmetrical with the longitudinal axis, the second group is positioned below the transverse axis and symmetrical with the longitudinal axis, the third group is positioned at the left side of the longitudinal axis and symmetrical with the transverse axis, the fourth group is positioned at the right side of the longitudinal axis and symmetrical with the transverse axis, the N poles of the third group and the fourth group are respectively positioned above the transverse axis and the S poles are respectively positioned below the transverse axis,
two sides of each clamping groove of the group of clamping grooves are provided with clamping slide ways, and two long sides of the long plate are arranged in the two clamping slide ways.
2. The magnetic needle magnetic grinding device for long plate hole edge tumor according to claim 1, wherein the holding groove is made of non-magnetic conductive material.
3. The magnetic needle magnetic grinding device for long plate hole edge tumor according to claim 1, wherein the clamping groove is made of non-magnetic conductive material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910622336.4A CN110202458B (en) | 2019-07-11 | 2019-07-11 | Magnetic needle magnetic grinding device for long plate hole edge tumor accumulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910622336.4A CN110202458B (en) | 2019-07-11 | 2019-07-11 | Magnetic needle magnetic grinding device for long plate hole edge tumor accumulation |
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| Publication Number | Publication Date |
|---|---|
| CN110202458A CN110202458A (en) | 2019-09-06 |
| CN110202458B true CN110202458B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910622336.4A Active CN110202458B (en) | 2019-07-11 | 2019-07-11 | Magnetic needle magnetic grinding device for long plate hole edge tumor accumulation |
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